640410160 has 160 divisors (see below), whose sum is σ = 1716640128. Its totient is φ = 220323840.

The previous prime is 640410139. The next prime is 640410209. The reversal of 640410160 is 61014046.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 980394 + ... + 981046.

Almost surely, 2^640410160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 640410160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (858320064).

640410160 is an abundant number, since it is smaller than the sum of its proper divisors (1076229968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

640410160 is a wasteful number, since it uses less digits than its factorization.

640410160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 640410160 is about 25306.3264817318. The cubic root of 640410160 is about 861.9579331434.

The spelling of 640410160 in words is "six hundred forty million, four hundred ten thousand, one hundred sixty".